Marking pen



FIG. 1 is a front elevational view of a marking pen, showing my newdesign;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view taken from the left side of FIG. 1,the right side elevational view being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a perspective view thereof; and,

FIG. 7 is a left side view in an exploded condition.

The ornamental design for a marking pen, as shown and described.